Photographic-printing frame



UNITED STATES PATENT OFFICE.

MICHAEL WITT, OF

COLUMBUS, OHIO.

PHOTOGRAPHlC-PPLINTING FRAME.

To all trhom it may concern:

Be it known that I, MICHAEL WITT, ofthe city of Columbus, Ohio, have invented a new and Improved Frame or Apparatus for Photographic Printing; and l do hereby declare that the following is a full and exact description thereof, reference being had tothe accompanying drawings, and to the letters of reference marked thereon.

The nature of my invention consists in providing a rabbeted 7 frame, in which the negative 7 is placed and where it is steadily and securely held by a hinged back, having a spring pad or cushion, self-adjusting to any thickness ot1 glass, and composed of two tlaps arranged that one may be opened to inspect the progress of the printing, while the other, remaining closed, prevents the slidingor other improper movement ofthe paper.

The following description will enable persons of ordinary skill to make and use my invention: A is a frame, of any suitable size, with a rabbet formed on the inside to hold the negative B. The back of the apparatus consists of two flaps, C D, attached by hinges and secured when closed by the latches E.

The iiaps are provided with cushions ofsheetbrass or other suitable material, F, which cush ions are secured to the naps in such a manntr as to be acted upon bythe spring G, Fig.2, so as to adjustthe cushion to different thicknesses ot'glass in the negatives.

The apparatus is used by placing` the nogative in the frame, laying the prepared paper thereon, covering the paper with the black velvet apron x, closing the backs, and exposing the frame to the sun.

The manner of examining the progress of the work and the use ofthe two aps or backs is shown in Fig. 3.

What I claim as my invention, and desire to secure by Letters Patent, is-

The application ot' the self-adjusting springcushions to the two liaps or back ofthe frame, arranged and operated for the purposes set forth and shown, or any other arrangement, substantiallythe same for the accomplishment ofthe same end.

M. WITT.

Writnesses:

B. TRESENRIDER, PHIL. D. FISHER. 

